At head of title: Dept. of the interior. John Barton Payne, secretary. National Park Service. Stephen T. Mather, director
"The first edition ... was issued by the Department of the interior in June 1916. The second edition, brought up to date by the substitution of later photographs and enlarged by the addition of thirty-six pages, was one of the first publications of the new National park service, which Congress created August 25, 1916. This, the third edition, contains twenty-two additional pages of pictures"--"Note to third edition", p.